One verse

Srimad Bhagavatam 6.18.51

6.18.51

नाधौतपादाप्रयता नार्द्रपादा उदक्शिरा: । शयीत नापराङ्‌नान्यैर्न नग्ना न च सन्ध्ययो: ॥ ५१ ॥

nadhauta-padaprayata nardra-pada udak-sirah sayita naparan nanyair na nagna na ca sandhyayoh

na
not
adhauta-pada
without washing the feet
aprayata
without being purified
na
not
ardra-pada
with wet feet
udak-sirah
with the head toward the north
sayita
should lie down
na
not
aparak
with the head pointed west
na
not
anyaih
with other women
na
not
nagna
naked
na
not
ca
an d
sandhyayoh
at sunrise and sunset.

You should not lie down without having washed both of your feet or without being purified, nor with wet feet or with your head pointed west or north. You should not lie naked, or with other women, or during the sunrise or sunset.